Rock Identifier

Category

Industrial Byproduct (Anthropogenic Material)

Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.

Learn about Industrial Byproduct (Anthropogenic Material) in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Peat

Almandine Garnet

Almandine Garnet

Dunite

Limonite

Shell Opal

Madagascar Opal

Lavender Obsidian

Electric Blue Obsidian

Orange Obsidian

Diamond

Metarhyolite

Red Jasper (River Siltstone) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (River Siltstone)

Silicon Dioxide (SiO2) with iron oxide inclusions

Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

Fulonite (Fulgurite-like) (Fulgurite (SiO2 fused silica/lechatelierite)) — Metamorphic (Pseudo-igneous)

Fulonite (Fulgurite-like)

Fulgurite (SiO2 fused silica/lechatelierite)

Metamorphic (Pseudo-igneous)

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire (Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material) — gemstone

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

Likely dark green-gray metamorphic pebble (Indeterminate; possibly chlorite schist, serpentinite, or amphibolite) — metamorphic

Likely dark green-gray metamorphic pebble

Indeterminate; possibly chlorite schist, serpentinite, or amphibolite

Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein (Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite) — metamorphic

Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein

Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite

Iron-stained quartz-bearing rock (Quartz (SiO₂), likely in a limonite/goethite-rich matrix) — mineral

Iron-stained quartz-bearing rock

Quartz (SiO₂), likely in a limonite/goethite-rich matrix

Red jasper pebble (Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides) — mineral

Red jasper pebble

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Anthracite Coal (Anthracite) — sedimentary

Anthracite Coal

Anthracite

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

Jasper (Red Jasper) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Smoky quartz (Quartz (SiO₂), brown-to-gray smoky variety) — mineral

Smoky quartz

Quartz (SiO₂), brown-to-gray smoky variety

Pumice (Pumice (Volcanic Glass Foam)) — igneous

Pumice

Pumice (Volcanic Glass Foam)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Mica-rich schist, likely lepidolite or muscovite schist (Mica schist; predominantly muscovite KAl₂(AlSi₃O₁₀)(OH)₂, possibly lithium-rich lepidolite) — metamorphic

Mica-rich schist, likely lepidolite or muscovite schist

Mica schist; predominantly muscovite KAl₂(AlSi₃O₁₀)(OH)₂, possibly lithium-rich lepidolite

Chert / Flint (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Diamond (Cubic Carbon (C)) — mineral

Diamond

Cubic Carbon (C)

Blue Impression Jasper beads (Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions) — gemstone

Blue Impression Jasper beads

Impression jasper (microcrystalline quartz/chalcedony), chiefly SiO₂, with iron-oxide and other mineral inclusions

Chert (specifically Flint or Novaculite variant) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (specifically Flint or Novaculite variant)

Chert (Microcrystalline Quartz, SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Ruby (Corundum (Al2O3:Cr)) — mineral

Ruby

Corundum (Al2O3:Cr)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Chert (specifically Flint or Jasper variant) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite (Metamorphosed Quartz Sandstone) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone

Olivine (Peridot) (Magnesium Iron Silicate ((Mg, Fe)2SiO4)) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Laterite (Laterite (Iron and aluminum-rich residual rock)) — sedimentary

Laterite

Laterite (Iron and aluminum-rich residual rock)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Diamond (Natural Carbon (C)) — mineral

Diamond

Natural Carbon (C)

Limonite (Bog Iron) (Limonite (Hydrated iron(III) oxide-hydroxide) - FeO(OH)·nH2O) — mineral

Limonite (Bog Iron)

Limonite (Hydrated iron(III) oxide-hydroxide) - FeO(OH)·nH2O

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2) with Hematite/Limonite) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2) with Hematite/Limonite

Chiastolite (Andalusite) (Al2SiO5) — metamorphic

Chiastolite (Andalusite)

Al2SiO5

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Red Jasper (Quartz) (Silicon Dioxide (SiO2) with Iron impurities) — sedimentary

Red Jasper (Quartz)

Silicon Dioxide (SiO2) with Iron impurities

Corundum (Corundum (Aluminium oxide, Al2O3)) — mineral

Corundum

Corundum (Aluminium oxide, Al2O3)

Orange Calcite (Carved as a Horned Skull) (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite (Carved as a Horned Skull)

Calcium Carbonate (CaCO3)

N/A (Non-Geological Object) — N/A

N/A (Non-Geological Object)

Fluorite (Green Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Green Fluorite)

Calcium Fluoride (CaF2)

Gemstone bead necklace (likely citrine or yellow quartz) (Quartz, SiO₂; precise identification is uncertain because the beads are blurred and metal settings obscure them) — gemstone

Gemstone bead necklace (likely citrine or yellow quartz)

Quartz, SiO₂; precise identification is uncertain because the beads are blurred and metal settings obscure them

Chert (Quartz Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartz Pebble)

Silicon Dioxide (SiO2)